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Dual Ball Bearing Fans - vibration on spin / Click

Joined
Oct 21, 2005
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#1
I have been running a bunch of $8 Koolance 120x38 116CFM fans with a fan controller.
The fans are about 9 months old. I am running them horizontal. They actually make more noise in vertical.

Do most dual ball bearing 120x38mm fans have this vibration? Is it worth running San Ace 120x38mm ball bearing fans or will they make similar noise.

Are single ball bearing fans quieter?

Do you guys have any recommended 120x38 models?

Edit: I doubled up some rubber fan isolators and it took care of about half the harmonics, I think the large motor is flexing the metal of my case and making it sing, still curious about higher end 120x38mm thick fans though. A lot of the used server fans are brushless, will these brushless fans still fail with horizontal operation?
 
Last edited:
Joined
Oct 21, 2005
Messages
4,041 (0.91/day)
Likes
1,852
Location
USA
System Name Small ATX Desktop
Processor Intel i7 3770k @ 4.5 GHz /1.25 volt
Motherboard Gigabyte GA-Z77X-UD3H with Beta Bios F20e
Cooling PHTC12DX CPU + MK-13 VGA, 1xDelta EFB1212VH, 2xYate Loon 140 PWM, 2xCorsair 120 PWM
Memory Samsung 30nm Green MV3V4G3D DDR3 16 GB (4x4GB) @ 1800 MHz CL9 1.35 volt
Video Card(s) PNY Geforce GTX 770 XLR8 2GB @ Core 1254 MHz / Ram 1800 MHz
Storage Seagate 600 240GB SSD (Boot) + 2xWD Caviar Blue WD10EZEX 1TB Data
Display(s) Asus PB258Q 2560x1440 + Asus VH242H 1920x1080
Case Lian Li PC A05 (Inverted Mobo)
Audio Device(s) Audiotechnica ATH M50X, Antlion Mod Mic 4, SYBA SD-CM-UAUD USB Audio Dongle
Power Supply Seasonic SS-660XP2 660 Watt Platinum
Mouse Zowie EC2A, Corsair MM600, inateck 900mm x 300mm Mat
Keyboard Filco Majestouch II Ninja TKL and Goldtouch GTC 0033 Ten Key (Cherry Browns)
Software Win7 64 Pro
Benchmark Scores Wprime 32 5.758 http://www.wprime.net/Scores/19988/View
#2
So I bought some 109R1212H1011 San Ace for what amounted to only ~$2.50 a fan! Anyway, they are brushless but this particular model is referred commonly as the "King of Fan". Can they be run horizontal long term despite being brushless? I'll probably throw two of em on my Phanteks heatsink for now to make it a bit beastlier!